Cold pack



FIG. 1 is an isometric view of a cold pack showing my new design;

FIG. 2 is a right side view thereof, with a left side view beingidentical to said right side view;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The ornamental design for a cold pack, as shown and described.